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Reducing the risk of desertification | AQA GCSE 9-1 Geography
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What are the strategies we can use to reduce the risk of desertification? How can deserts be used sustainably?
This is the thirty-third video for the AQA GCSE 9-1 Geography course, and the thirteenth video of The Living World topic.
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Video Script:
Sustainable management and use of the land at the edges of deserts can reduce the risk of desertification.
Planting trees is a method of reducing desertification that has many benefits. Tree roots hold soil together, which reduces erosion by the wind and rain. They also provide wood for the local population to use for fuel and building. Furthermore, trees support other wildlife - their foliage can feed animals and the shade and moisture provide ideal growing conditions for plants.
Some hot deserts have been designated as national parks to protect them from desertification. An example of this is the Thar Desert in India, where a 3,000km² national park was created in 1992.
Soil quality can be improved through better farming methods. People can reduce the number of livestock grazing on their land and grow crops instead, while also using the animal manure for fertiliser. This protects the soil from erosion as it is held together by the roots of the plants.
Water management is also important for both water and soil. Ponding banks can be used to store water - these are areas of land enclosed by low walls. And contour traps help reduce soil erosion by building embankments along contour lines, preventing the soil from being washed down when it rains. An example of this can be found in Burkina Faso. In parts of the country, lines of stones known as ‘magic stones’ have been constructed. They are between 0.5m and 1.5m high and are built along contours of slopes, trapping water and soil when it rains. This has increased crops by up to 50%, successfully mitigating desertification. This is also an example of appropriate technology - locals used basic tools and vehicles to transport the stones.
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GCSE Geography
06/05/2023
Keducate
This is the thirty-third video for the AQA GCSE 9-1 Geography course, and the thirteenth video of The Living World topic.
The Living World Playlist:
Follow me on all platforms:
Do you have a video suggestion?
Video Script:
Sustainable management and use of the land at the edges of deserts can reduce the risk of desertification.
Planting trees is a method of reducing desertification that has many benefits. Tree roots hold soil together, which reduces erosion by the wind and rain. They also provide wood for the local population to use for fuel and building. Furthermore, trees support other wildlife - their foliage can feed animals and the shade and moisture provide ideal growing conditions for plants.
Some hot deserts have been designated as national parks to protect them from desertification. An example of this is the Thar Desert in India, where a 3,000km² national park was created in 1992.
Soil quality can be improved through better farming methods. People can reduce the number of livestock grazing on their land and grow crops instead, while also using the animal manure for fertiliser. This protects the soil from erosion as it is held together by the roots of the plants.
Water management is also important for both water and soil. Ponding banks can be used to store water - these are areas of land enclosed by low walls. And contour traps help reduce soil erosion by building embankments along contour lines, preventing the soil from being washed down when it rains. An example of this can be found in Burkina Faso. In parts of the country, lines of stones known as ‘magic stones’ have been constructed. They are between 0.5m and 1.5m high and are built along contours of slopes, trapping water and soil when it rains. This has increased crops by up to 50%, successfully mitigating desertification. This is also an example of appropriate technology - locals used basic tools and vehicles to transport the stones.
--
GCSE Geography
06/05/2023
Keducate
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